Inductive power transfer apparatus
AssigneeAuckland Uniservices Limited
InventorsJohn Talbot Boys, Chang-Yu Huang
Life of this patent
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Abstract
A magnetic flux pad for generating or receiving magnetic flux has two pole areas (11, 12), a permeable core (14) and a coil (16) wound about the core. The pad allows useable flux to be generated at a significant height above a surface of the pad.
Claims23
A magnetic flux pad for generating or receiving magnetic flux, the pad having a front face and a back face and comprising:
- a magnetically permeable material having two ends from which magnetic flux is directed into an area beyond the front face of the pad;
- two separated solenoidal windings connected magnetically in series and magnetically associated with the permeable material;
- and
- a magnetic flux repelling member adjacent to the back face.
A magnetic flux pad having a front face and a back face for generating a magnetic flux in a space beyond the front face of the pad, the pad comprising:
- two pole areas for sending or receiving flux;
- a magnetically permeable core magnetically connecting the pole areas;
- a winding magnetically associated with the core;
- a flux repelling member provided adjacent to a rear face;
- and
- wherein each pole area includes a plurality of fingers.
An IPT system including a first magnetic flux pad or IPT power transfer pad for connection to a power supply and a second magnetic flux pad or IPT power transfer pad for connection to a load, the first and second magnetic flux pads or IPT power pads having one or more windings with a same number of turns, and wherein the number of turns is selected dependent on a required operating frequency.
Dependencies are inferred from the claim text.